elimination of nonmetallic inclusion 去除非金属夹杂
form modification of nonmetallic inclusion 非金属夹杂变形
nonmetallic inclusion modification 夹杂物变性处理
nonmetallic inclusion in steel 钢中非金属夹杂物
largescale nonmetallic inclusion of ingot 钢锭中大型非金属夹杂物
Experiments on deoxidation with al for ZL18A steels were carried out. The effect of s content on nonmetallic inclusion was observed.
对ZL 18 A钢进行了用铝脱氧、控制钢中夹杂物和酸溶铝含量的研究。
The results showed that the major cause of longitudinal surface cracking of 20 steel tube blanks was higher nonmetallic inclusion content in the steel than standard value.
结果表明： 非金属夹杂物超标是导致管坯表面产生纵向裂纹的主要原因。
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